
3.8 Digital Systems: Principles and Design
S = ∑m (2, 3, 6, 7, 14, 15). It means 6 terms 2, 3, 6, 7, 14 and 15 are present. There
we place 1s as shown in six cells of Table 3.10.
Table 3.10 is a filled map with the above SOP output and above set of six
minterms.
Remember the following Operations
1. When minterm is present in an SOP expression, we place 1 at the corre-
sponding cell for the term.
2. Complete the step 1 for all the rows for the minterms of a Boolean expres-
sion or logic circuit corresponding to that.
3.2.3 Karnaugh Map from the Maxterms in a POS
Recall Sections 2.7.4 to 2.7.6. Recall the Tables 2.6 to 2.8. A four-input truth table ...